Влияние удобрений на видовой состав фитопланктона и рыбопродуктивность прудов

Abstract

The present work was spent on ponds of fish industry firm “Suskan” (Russia), and of fish-breeding reservoirs of the south of Belarus, located in the third zone of fish-breeding. Researches have shown that in nursery ponds with low level of intensification the efficiency of transformation of primary production on trophic levels was considerably above. In these ponds fishes acquired on the average 1,2 % of primary production of a plankton that in 1,7 times above, than in ponds with high level of an intensification. High the fish-breeding indicators in the last case were reached basically for the account of consumption by fishes of the brought concentrated mixed fodders.